Designed to be curative (8)
I believe the answer is:
remedial
'designed to be curative' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for remedial that I've seen before include "Concerned with those with learning difficulties, for example" , "'Therapeutic, healing (8)'" , "Intended to put right" , "Providing cure or help for disability" , "for slow learners" .)